In reply to Jordon Fleming:
I bought a 50% down, 50% chicken-feather jacket from Decathlon in March for £15!
Also look out for Keela Latitude - it is Primaloft rather than down but I loved mine (looking a bit long-in-the-tooth 4.5 years down the line but I only paid £70 for it and I wore it too much as an "every day" jacket. Packs down neatly enough if not as compact as real down. £135 RRP I think.